What is PP LGF40 Material?
LFT-G® PP LGF40AR is a high-performance polypropylene composite reinforced with 40% long glass fibers, specially developed for applications requiring enhanced aging resistance, UV stability, and long-term mechanical performance. This advanced material maintains excellent strength retention and dimensional stability under prolonged exposure to outdoor environments.
Compared with standard PP compounds, the long glass fiber reinforcement and weather-resistant formulation provide improved stiffness, creep resistance, and durability. PP LGF40 Weathering Resistant is an ideal solution for outdoor structural components, industrial equipment, electrical enclosures, and applications exposed to changing climate conditions.
Key sTRENGTH
Long glass fiber reinforcement
Tensile Strength
132 MPa
Deflection Temperature
159 °C
Key Performance Advantages
Why engineers choose LFT-G® PP LGF40AR for mission-critical components

Enhanced Weathering Stability
Excellent UV Resistance
Superior Mechanical Retention
Low Moisture Sensitivity
Performance Edge: Long Fiber vs. Short Fiber
Long Glass Fiber Advantage: PP LGF40 AR vs PP GF40 AR

* Data shown are typical values. Long fiber reinforcement delivers superior mechanical and thermal performance.
LFT-G® PP LGF40 AR utilizes a continuous long glass fiber reinforcement structure to deliver superior mechanical retention, dimensional stability, and weathering durability compared with short glass fiber PP GF40 AR. The enhanced fiber network helps maintain part performance under long-term outdoor exposure, temperature fluctuations, and demanding industrial conditions.
Technical Data Sheet
| Property | Value | Unit | Standard |
|---|---|---|---|
| Density (Specific Gravity) | 1.23 | g/cm³ |
ASTM D-792
|
| Tensile Strength | 132 | MPa | ISO 527 |
| Tensile Modulus | 8961 | MPa |
ISO 527
|
| Elongation at Break | 1.8-2.6 | % | ISO 527 |
| Flexural Strength | 180 | MPa |
GB/T 9341
|
| Flexural Modulus | 6726 | MPa |
GB/T 9341
|
| Notched Izod Impact Strength (23°C) | 37 | kJ/m² | ISO 180 |
| Heat Deflection Temperature (1.8 MPa) | 159 | °C |
ISO 75-2
|
| Molding Shrinkage | 0.10-0.30 | % |
ASTM D-955
|
Processing Guidelines – Injection Molding

Pre-Drying
Dry at 80 – 100 °C for 4 – 6 hours.
Moisture content must be < 0.1% to prevent hydrolysis.
Injection Molding
Melt temperature: 260 – 290 °C.
Injection pressure: 80 – 150 MPa, medium to high speed.
Cooling & Demolding
Mold temperature: 80 – 120 °C.
Cooling time: 15 – 30 s. Annealing at 120 – 140 °C (optional) to relieve stress.
Where PP LGF40 AR Performs Best

Outdoor Equipment Components
Used for outdoor equipment housings, support structures, and protective parts requiring UV resistance and long-term durability.

Electrical Enclosures
Suitable for outdoor electrical boxes and protective covers where dimensional stability and weather resistance are essential.

Industrial Structural Parts
Applied in machinery components and industrial frames that require high stiffness and stable performance over extended service periods.

Garden & Utility Equipment
Ideal for lawn tools, irrigation systems, and outdoor utility products exposed to changing weather conditions.
Q: How does PP LGF40 AR improve outdoor component durability?
A: PP LGF40 AR uses long glass fiber reinforcement and aging-resistant technology to maintain stiffness, strength, and dimensional stability during long-term exposure to UV, heat, and changing weather conditions.
Q: What is the difference between PP LGF40 AR and standard PP GF40?
A: Compared with short glass fiber PP GF40, PP LGF40 AR provides a stronger fiber network, better mechanical retention, lower deformation, and improved durability for demanding structural applications.
Q: Which industries use PP LGF40 AR compounds?
A: PP LGF40 AR is widely used in outdoor equipment, electrical enclosures, industrial components, and utility products where lightweight design, weather resistance, and long service life are required.

Contact: Emily
Email: sale04@lfrtplastic.com
WhatsApp / Mobile: +86 188 5034 4811
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